IV CONTENTS. 



NUMBER LXXXVI.— FEBRUARY. 



Page 



On Arsenic. By Thomas Thomson, M.D. F.R.S 81 



Experiments to determine the exact Composiiion of different inorganic 



Bodies. By Professor Berzelius 8g 



Demonstration of Dr. Taylor's Theorem. By Mr. Adams yg 



On Urinary and other Morbid Concretions. By W. Henry, M.D. F.R.S. 107 



On Sulphuric Ether. By J. Dalton 1 17 



Calculations of the Annular Eclipse. By Col, Beaufoy, F.R.S 133 



Analytical and Critical Account of the Memoirs of the Literary and Philo- 

 sophical Society of Manchester, Second Series, Vol. Ill 136 



Proceedings of the Royal Society, Jan. 13, and 20 142 



Geological Society of Cornwall 143 



Analysis of a Specimen of Blende 146 



Chemical Analysis of Egeran 146 



New Nickel Ore 147 



Position of Lyons 148 



Clock 1 48 



Declination of the Needle at Lyons 149 



Position of Lucca ■ Hg 



Position of Montpellier 149 



Determination of some Places on the Coast of Sicily 14g 



Occultations of Stars behind the Moon, observed at the Observatory of 



the Royal Academy ofTurin between 1812 and 1817 150 



Position of Places on the Coast of the Adriatic Sea 150 



Isle of Elba 152 



Population of the Calton in Nov. 18 ig 152 



Meteorological Journal made at Cork. By T. Holt, Esq. (With a Plate.) 154 



New Rockets 155 



Pink Sediment of Urine 155 



Col. Beaufoy's Magneiical and Meteorological Observations for December 156 



Mr. Howard's Meteorological Journal for December 159 



NUMBER LXXXVII.— MARCH. 



Biographical Account of Stephen Hales, D.D. F.R.S l6l 



Description of a Barometer for measuring Heights. By James Allan. .. 17I 

 Results of a Meteorological Register kept at New Malton, in Yorkshire, 



in I8I9. By Mr. James Stockton 174 



On the Going of a Clock with a Wooden Pendulum. By Col. Beaufoy. . 176 

 Extracts from the Persian Work called " The Book of Precious Stones," 



by Mohammed Ben Manssur 178 



Description of an Apparatus for the Analysis of organized Substances. By 



W. Prout, M.D. F.R.S. (With a Plate.) 190 



Analytical and Critical Account of the Memoirs of theLiterary and Phi- 

 losophical Society of Manchester, Vo\. 111. {concluded.) igS 



Proceedings of the Geological Society, Dec. 3, 17. and Jan. 7 210 



— '■ . — Royal Academy of Sciences 215 



